Your date will be confirmed with your first u/s anyway. Maybe go for a date in the middle!! They come out when they want to anyway and no date we are given can change it!! Maybe use the 13th June - haha

It's always better to go for the furthest date anyways, as Obs will start the push to induce you after a certain time over your EDD so if you have an earlier one, baby just might not be ready yet. Ovulation is more accurate if you know when it was, scan dates are not the best either and only 5% of babes come on their EDD! The majority come in the 2 weeks before and 2 weeks after the EDD.

Google 'pregnancy expected due date calculator' and the best one is about 3 - 4 sites down... it's called hpathy or something. It lets you enter you first day of last period, and your average cyle length amd LP if you know it... it will give you the EDD and the day you were most likely to concieve and of course how far along you are!